cobaltstrike | NEAS[.]2023-09-06_0838e63739dcf3fb5470bb012fa93504_cobalt-strike_cobaltstrike_meterpreter_JC[.]exe

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General

Target

NEAS.2023-09-06_0838e63739dcf3fb5470bb012fa93504_cobalt-strike_cobaltstrike_meterpreter_JC.exe
Size

218KB
MD5

0838e63739dcf3fb5470bb012fa93504
SHA1

3a927e2c3dd31e5138e80a2a47bec27d93cc3c1f
SHA256

20b3486a3122663c12ac2de54633a7c4f42ef1f7002289f39aa2474ebd8469b5
SHA512

29c86d2e5c31d33e545f66fd19be9013734d3d34fc4b068b9d1d165ba5449c25a207cd9a6bf9098a3b8797d4bbbc9e8e388e27d5829d47e052ab12f56c68a100
SSDEEP

3072:wfyTBpXSc43UtiD8Umh8I6UkwbF+EjJeNDU2a7Vo8nifGRjdU65pBS:wfYD4ktiD8UI8I6hG+6Ashnif6jn

Score

10^/10

cobaltstrike

Malware Config

Signatures

Cobalt Strike reflective loader 1 IoCs

Detects the reflective loader used by Cobalt Strike.

resource	yara_rule
sample	cobalt_reflective_dll

Cobaltstrike family
cobaltstrike

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
NEAS.2023-09-06_0838e63739dcf3fb5470bb012fa93504_cobalt-strike_cobaltstrike_meterpreter_JC.exe

Files

NEAS.2023-09-06_0838e63739dcf3fb5470bb012fa93504_cobalt-strike_cobaltstrike_meterpreter_JC.exe
.dll windows:5 windows x86

dd2ee89b38b455d38772c37d994f2beb

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
IMAGE_FILE_BYTES_REVERSED_HI

Imports

kernel32

GetLocalTime
CreatePipe
GetCurrentDirectoryA
GetCurrentProcess
ConnectNamedPipe
GetCurrentThread
ReadFile
CreateNamedPipeA
GetThreadContext
ReadProcessMemory
CreateProcessA
TerminateProcess
GetCurrentDirectoryW
VirtualProtectEx
WriteProcessMemory
ResumeThread
GetFullPathNameA
SystemTimeToTzSpecificLocalTime
GetLogicalDrives
ExpandEnvironmentStringsA
GetFileAttributesA
FileTimeToSystemTime
FindFirstFileA
CopyFileA
FindClose
MoveFileA
FindNextFileA
OpenProcess
GetCurrentProcessId
Thread32First
Thread32Next
VirtualAllocEx
OpenThread
CreateToolhelp32Snapshot
CreateThread
CreateRemoteThread
SetThreadContext
SetLastError
GetVersionExA
CreateFileA
PeekNamedPipe
WaitNamedPipeA
SetNamedPipeHandleState
GetComputerNameA
GetACP
GetModuleFileNameA
GetOEMCP
DeleteProcThreadAttributeList
GetStartupInfoA
InitializeProcThreadAttributeList
SetErrorMode
UpdateProcThreadAttribute
ProcessIdToSessionId
DuplicateHandle
Process32First
Process32Next
VirtualQuery
ExitProcess
ExitThread
SetCurrentDirectoryA
FlushFileBuffers
DisconnectNamedPipe
MultiByteToWideChar
WriteFile
GetTickCount
WaitForSingleObject
Sleep
CloseHandle
VirtualProtect
GetModuleHandleA
CreateFileMappingA
LoadLibraryA
VirtualAlloc
GetProcAddress
GetLastError
HeapCreate
HeapDestroy
VirtualFree
DebugBreak
RaiseException
GetModuleFileNameW
SetEnvironmentVariableW
HeapFree
HeapAlloc
FreeLibrary
SetEnvironmentVariableA
CompareStringW
CompareStringA
SetEndOfFile
GetStringTypeW
GetStringTypeA
LCMapStringW
LCMapStringA
SetStdHandle
WriteConsoleW
GetConsoleOutputCP
WriteConsoleA
GetLocaleInfoA
HeapSize
IsValidCodePage
GetCPInfo
QueryPerformanceCounter
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetEnvironmentStrings
FreeEnvironmentStringsA
SetFilePointer
GetFileType
SetHandleCount
GetConsoleMode
UnmapViewOfFile
GetProcessHeap
MapViewOfFile
GetModuleHandleW
DeleteFileA
CreateDirectoryA
RemoveDirectoryA
GetSystemTimeAsFileTime
HeapReAlloc
GetCurrentThreadId
GetCommandLineA
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
GetStdHandle
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
InterlockedDecrement
InitializeCriticalSectionAndSpinCount
RtlUnwind
WideCharToMultiByte
GetConsoleCP

advapi32

LookupAccountSidA
OpenThreadToken
CryptReleaseContext
CryptAcquireContextA
CryptGenRandom
LogonUserA
CheckTokenMembership
FreeSid
RevertToSelf
AllocateAndInitializeSid
DuplicateTokenEx
OpenProcessToken
GetTokenInformation
GetUserNameA
CreateProcessWithTokenW
CreateProcessWithLogonW
CreateProcessAsUserA
AdjustTokenPrivileges
ImpersonateNamedPipeClient
ImpersonateLoggedOnUser
LookupPrivilegeValueA

wininet

InternetReadFile
InternetConnectA
InternetQueryDataAvailable
InternetSetOptionA
HttpOpenRequestA
HttpAddRequestHeadersA
InternetSetStatusCallback
HttpSendRequestA
InternetOpenA
InternetCloseHandle
InternetQueryOptionA
HttpQueryInfoA

ws2_32

ntohs
connect
socket
gethostbyname
send
WSAIoctl
recv
WSACleanup
closesocket
WSASocketA
ntohl
htons
htonl
shutdown
WSAGetLastError
ioctlsocket
accept
listen
__WSAFDIsSet
bind
sendto
select
inet_addr
recvfrom
WSAStartup

Exports

Exports

_ReflectiveLoader@4

Sections

.text
Size: 153KB - Virtual size: 152KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 39KB - Virtual size: 39KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 16KB - Virtual size: 49KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

dd2ee89b38b455d38772c37d994f2beb

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

wininet

ws2_32

Exports

Exports

Sections

.text Size: 153KB - Virtual size: 152KB

.rdata Size: 39KB - Virtual size: 39KB

.data Size: 16KB - Virtual size: 49KB

.reloc Size: 8KB - Virtual size: 7KB

.text
Size: 153KB - Virtual size: 152KB

.rdata
Size: 39KB - Virtual size: 39KB

.data
Size: 16KB - Virtual size: 49KB

.reloc
Size: 8KB - Virtual size: 7KB